Low-temperature quick-drying water road sign coating and preparation method thereof

Abstract

The invention relates to a low temperature resistant and quick drying waterborne road mark paint and a preparation method thereof. The component weight proportion of the white paint of the invention is of 30-45 percent of organosilicon-acrylic acid polymer emulsion, 0.5-2.5 percent of dispersion agent, 5-10 percent of titanium oxide, 40-55 percent of filler, 2-6 percent of film-forming additive, 0.2-1 percent of anti-foam agent, 0.2-1 percent of pH regulator and the rest proportion of water. The yellow paint of the invention is based on the white paint components which are added with yellow pigment of 2.0-5.0 percent and the preparation method thereof comprises the steps that: (1) dispersion agent is added to the organosilicon-acrylic acid polymer emulsion; (2) filling and titanium oxide are added to mixed solution of the emulsion and the dispersion agent and then are sheared or grinded at high rate; (3) the anti-foam agent and next the film-forming additive are added, pH value is adjusted and water is added to adjust balance. The paint is applicable to low temperature and dries quickly, and has the advantages of environmental friendliness, energy conservation, safety and reliability, being easy to be recoated, simple preparation technique and short preparation time, thereby being applicable to industrial production.

Description

technical field [0001] The invention belongs to coatings and methods thereof, in particular to a road marking coating and a preparation method thereof. Background technique [0002] Road signs are a necessary measure to standardize traffic laws and protect human safety in the world today. With the development of society, their role significance is becoming more and more important. As a sign paint, its demand and performance quality requirements are also increasing and becoming more and more The more tend to be safe, environmentally friendly and reliable. [0003] The road marking paints currently used in my country are mostly two types of traditional solvent paints and hot-melt paints, which contain a large amount of harmful substances, harm the body of construction workers, have large environmental sequelae, high energy consumption, are easy to slip in rainy days, are not safe, and are not easy to reload. A series of shortcomings such as difficulty in coating construction, ...

AI Technical Summary

Problems solved by technology

[0003] The road marking paints currently used in my country are mostly two types of traditional solvent paints and hot-melt paints, which contain a large amount of harmful substances, harm the body of construction workers, have large environmental sequelae, high energy consumption, are easy to slip in rainy days, are not safe, and are not easy to reload. A series of shortcomings such as difficulty in coating construction, especially its high VOC (volatile organic compound) as high as 650g / L, a large amount of solvent volatilization, causing immeasurable pollution consequences to the environment, and the Shanghai area alone consumes more than 1,000 a year tons of solvent-based marking paint as an example, then at least 500 tons of toxic and harmful solvents volatilize in the local area every year, and it is incalculable to extend it to the whole country

In addition, the limitation of construction temperature also greatly restricts the use of water-based coatings.